Dont know about others, I have one that is over 400fps after being 3 months old (only change G&G bucking). Was hop up on or off, chrono good? Had a gun checked yesterday at one feild 405/414, today at another place 370/375 (.20s). Only thing you could check without voiding your warr would be bucking area. The spring may have been compressed for a while before purchase? Would check with place you bought it from, or if KWA thinks that is a warr issue before going into gearbox. Love my SR10, hope you get yours where you need it to be.

Were you planning on making any upgrades internally, or leaving it stock? If you were planning on leaving it stock, I'd contact KWA about a warranty if it's that big of an issue to you. If it really makes no difference or you were planning on upgrading, just take it to a tech, see what he has to say, and do some upgrades. I know my SR7 was only shooting about 315 instead of 350 when I bought it. Granted, I bought it used, but I was planning on upgrading it anyways and now it shoots like a dream. For my SR10, when I first bought it the compression build was terrible, and that could be causing your low FPS. A new o-ring and air nozzle should fix it up fine. If that still doesn't work, upgrade the spring. But be conscious that if you put a new bucking in, it will severely drop the FPS from the spring so you will have to get a more powerful spring than you anticipated. My SR7 shot 410 with an M110 long and KWA bucking, 375 with M110 long and Maple Leaf bucking/flathop.

I bought a SR10 and is also shooting @ 355-350 FPS wonder should a spring upgrade is what is needed to bring it to around 405-415
I'm an outdoor player and I like to reach and touch from a distance. I also know two other guys that have he same issue @ the field I play

I bought a SR10 and is also shooting @ 355-350 FPS wonder should a spring upgrade is what is needed to bring it to around 405-415
I'm an outdoor player and I like to reach and touch from a distance. I also know two other guys that have he same issue @ the field I play

Hi N_A - I have a few questions. The FPS is low compared to what you should expect. Is the FPS measured with the hop-up off and with .2 BBs? Also, what cylinder is installed in it (a picture would be helpful)? Lastly, are you the original owner and is the gun new?

I used .2 to tested, I was hoping get 380-390 closer to 400 the AEG is brand new got it January from Evike, with he hop up off I get closer to 360, also have a KM head 6.02 TBB everything is stock except the inner barrel. My RM4 shoots around 360-365, could it be compression. In Maryland is hard to find a tech that knows what's doing. when I first got it did not chrono it cause over here it's been a harsh winter

I used .2 to tested, I was hoping get 380-390 closer to 400 the AEG is brand new got it January from Evike, with he hop up off I get closer to 360, also have a KM head 6.02 TBB everything is stock except the inner barrel. My RM4 shoots around 360-365, could it be compression. In Maryland is hard to find a tech that knows what's doing. when I first got it did not chrono it cause over here it's been a harsh winter

Where did you purchase the KM Head from and who installed it? My guess is your issue is there. Do you have the stock inner barrel?

I installed it my self, the KM head is brand new but even before the barrel, the fps was 350 my opinion is the new SR10 are not tune like the old ones, two other guys I know had the same surprise. We just got them in January from deferent vendors.

Have you checked your hopup. On my CQR the nub was binding causing the hopup to be on all the time. When I chronoed I was getting 260. I fixed the hopup and rechronoed and with 25's ended up with about 300.
Turned out there was casting flash in the window binding the nub. Trimmed the flash and all is good.

Have you checked your hopup. On my CQR the nub was binding causing the hopup to be on all the time. When I chronoed I was getting 260. I fixed the hopup and rechronoed and with 25's ended up with about 300.
Turned out there was casting flash in the window binding the nub. Trimmed the flash and all is good.